Research Progress of Oregano Essential Oil in Alleviating Ruminal Methane Emission in Ruminants
The greenhouse gas emissions of ruminants account for 80％of the total greenhouse gas emissions of livestock and poultry.Methane,as a by-product of rumen microbial metabolism,not only causes serious harmness to the environment but also reduces the feed energy utilization of ruminants.Plant extracts have become one of the research hotspots in the field of methane emission reduction due to their ability to regulate rumen microbial communities.Oregano essential oil is a plant extract extracted from oregano that contains a variety of biologically active substances.With thymol and carvacrol as the main active factors,it can improve the rumen environment,change the composition of rumen microorganisms,and regulate rumen fermentation.Biological functions have broad application prospects in the field of ruminant breeding.The methane-lowering effect of oregano essential oil has been studied on a variety of animals.The results show that oregano essential oil can reduce ruminal methane emissions by regulating rumen microorganisms and their metabolism,but the research on its mechanism of action is not in-depth enough.This article takes ruminants as the subject and reviews the mechanism of oregano essential oil to improve methane emissions by regulating the abundance and composition of bacteria,archaea and protozoa in the rumen,regulating rumen metabolism,inhibiting the carbon dioxide reduction pathway and the acetate fermentation pathway,and to provide reference for the application of oregano essential oil in feed.
国家科技期刊平台
NSTL
万方数据
维普
